North Island Kaka

Kaka fly from Little Barrier Island to feed at Tiritiri Matangi - Image: Geoff Moon
Kaka fly from Little Barrier Island
to feed on Tiritiri Matangi
 
Kaka chewing on a coprosma stem - Image: Geoff Moon
Kaka chewing on a coprosma stem

Kaka (Nestor meridionalis) are found in both the North and South Islands of New Zealand. They are part of the parrot family of birds and are close relations of the kea.

North Island kaka are of a duller brown colour than their South Island cousins. The feathers are grey to dark brown without the silvery head feathers. They are also smaller. They have very powerful wings and can fly long distances.

Many of the kaka populations on the mainland have become extinct. Great Barrier Island provides one of the last refuges for the bird in the greater North Island area, especially as there are no mustelid present.

Kaka feed on a variety of foods in the podocarp/kauri forests. Seasonally flowering plants such as pohutukawa, puriri and rewarewa produce large amount of nectar which the kaka collect with their bristle tipped tongue. Kaka also have a very strong curved bill which they use to rip bark from trees to lick the sap or hunt for huhu grubs. Honeydew is a low priority in the northern forests as there are many other trees which produce large quantities of nectar. The seeds of kauri are also a favourite. They eat surface dwelling invertebrates such as bag moths, scales and weta eggs. Kaka use their claws to pick up food and hold it while they eat.

Their breeding cycle is not determined by beech masting cycles and so are known to breed each year. They nest in hollow trunks often in pohutukawa, puriri and matai trees.

 

Parts of a North Island Kaka

Features

Major Functions

External

Feathers

Water proof

Olive-brown/dark brown

Red underside of wings

Camouflage

Warmth

Courtship

Wings

Strong

Versatile

Silent flight

Displaying, courtship

Beak or Bill

Curved

Extremely strong

Black

 

 

 

 

(Brush tongue)

Ripping bark

Ripping cones

Breaking decaying wood

Extracting larvae and beetles

Walking, balance

Preening

(Nectar feeding)

Legs and Feet

Black

Feeding

Perching

Walking, hopping

Eggs

Nest inside tree trunk

4 white eggs

24 days to hatch

Reproduction

© Heurisko Ltd www.learnz.org.nz/2001